MALICIOUS
156
Risk Score
Malware Insights
MITRE ATT&CK
T1566.001 Spearphishing Attachment
This PDF file was flagged by multiple heuristics and a machine learning classifier as malicious, with ClamAV identifying it as a phishing trojan. It contains numerous links pointing to compromised WordPress sites and disposable hosting, suggesting a phishing or malware distribution campaign. The presence of embedded URLs and the nature of the heuristics indicate an attempt to redirect users to malicious content.
Machine Learning
- Nyx PDF Classifier malicious score 0.9966
Heuristics 6
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ClamAV: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0 critical CLAMAV_DETECTIONClamAV detected this file as malware: Pdf.Phishing.Trojan-d2528dad23a95d95-d2528dad23a95d95-10044376-0
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PDF link farm points to compromised-WordPress upload storage medium PDF_COMPROMISED_CMS_UPLOAD_LINK_FARMPDF contains multiple clickable links, across many distinct hosts, whose targets are random-slug files parked in the upload directories of vulnerable WordPress form plugins (FormCraft, Super Forms). This is the hallmark of the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains hosted on compromised sites. The PDF itself carries no exploit — the risk is the linked destinations.
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Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARMSmall PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
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External URI info PDF_URIPDF contains an external URL action
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Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTALThe same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
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Embedded URL info EMBEDDED_URLOne or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.URL https://crewmak.ru/uplcv?utm_term=receipt+of+house+rent+format
- https://transcendenceit.com/wp-content/plugins/super-forms/uploads/php/files/4bea4c983e91ac86f0eb420437d5346c/85876756495.pdf
- http://dabien.co.kr/wp-content/plugins/formcraft/file-upload/server/content/files/160763f28791f9---dizogadetujit.pdf
- http://aleeblog.com/wp-content/plugins/super-forms/uploads/php/files/dg1ebga8fveh4ejbn7q7enn4r6/wapanewabaketajeromexesi.pdf
- https://decoveinvestment.com/userfiles/file/pubogewasu.pdf
- http://ahchala.com/img/file/11136452418.pdf
- https://vieclambanhang247.com/upload/files/37551437872.pdf
- http://www.gabrielamaciel.net/images/content/file/48634879273.pdf
- http://lookupagency.es/wp-content/plugins/formcraft/file-upload/server/content/files/16074a776e0a99---ponib.pdf
- http://asesorgubernamental.com/images/file/vojusinizujanibemowege.pdf
- http://andreagarciam.com/wp-content/plugins/formcraft/file-upload/server/content/files/160dc6423290d4---wolobepakozidol.pdf
- http://rusiuojigalvoji.lt/wp-content/plugins/formcraft/file-upload/server/content/files/160a7154724518---zapekezabimi.pdf
- http://thevisionkharj.com/userfiles/files/84338013512.pdf
- https://dm288.com/slicice/file/xisogo.pdf
- http://airsoft1.ro/files/file/85486873197.pdf
- http://topcudental.com/img/userfiles/files/4368854823.pdf
- http://kojeneckezbozi.eu/userfiles/file/nitij.pdf
- https://greyquotient.com/wp-content/plugins/super-forms/uploads/php/files/f3eec2c66ed20095313019cb3bfe5856/zazuwijutisiwilideb.pdf
- http://nitexprofi.cz/userfiles/file/84726938179.pdf
- http://www.chicagoalphas.com/wp-content/plugins/formcraft/file-upload/server/content/files/160846c5f076c5---57727523106.pdf
- http://xn--90ad5ackt1d.xn--p1ai/wp-content/plugins/super-forms/uploads/php/files/91cff29adaaab30d4e2d8dae5904ce4d/xamazidiferelerobowezo.pdf
- http://www.veronicaneal.com/wp-content/plugins/formcraft/file-upload/server/content/files/1/160a0208f8cc20---wateloloxuvivupujop.pdf
- http://www.w3.org/1999/02/22-rdf-syntax-ns#
- http://purl.org/dc/elements/1.1/
- http://ns.adobe.com/pdf/1.3/
- http://ns.adobe.com/xap/1.0/
- http://ns.adobe.com/xap/1.0/mm/
- http://ns.adobe.com/xap/1.0/rights/
- http://dejavu.sourceforge.net
- http://dejavu.sourceforge.net/wiki/index.php/License
Extracted artifacts 3
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
font_00_sfnt_off00010670.bin9d2294e344127da9ddc2b77d68b1576b6b78373885bc9da2859f180a98f2c1e1 |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x10670 | 16792 bytes |
font_01_sfnt_off00011e87.bin501e19a854eb2f2284e38419405ab94e7eb4395c93b7a626728c065a1b20fadb |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x11E87 | 10844 bytes |
font_02_sfnt_off00013761.bineaa326a971f58ed5a945206b30b979ea6a287ae369bbf43b9407458fd037651e |
pdf-font-stream | PDF embedded font (sfnt) at offset 0x13761 | 17356 bytes |
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